Results 21 to 30 of about 6,877,003 (306)
Phase-Controlled Thyristor Sub-Synchronous Damper Converter for a Liquefied Natural Gas Plant
Energies, 2021 In electrified liquefied natural gas (LNG) plants variable frequency drives (VFDs) interact with turbine-generator (TG) units creating torsional vibrations known as sub-synchronous torsional interactions (SSTIs). Torsional vibrations can be dangerous for
Lorenzo Bongini +3 more
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A Comprehensive Review of Grid-Connected PV Systems Based on Impedance Source Inverter
IEEE Access, 2022 The increase in linking photovoltaic (PV) power plants to utility grids are due to the world expansion in PV systems and its advantages of low running cost, renewable, etc. Although PV is now considered one of the main power sources in many countries, it
Ihab Jamal +5 more
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Праці Інституту електродинаміки Національної академії наук України, 2023 The processes of creating an electromagnetic force acting on the molten metal in the active zone of a magnetodynamic pump are studied depending on the spectral composition of the higher harmonic components of the current in the channel and the induction ...
А.А. Щерба, М.О. Ломко
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Enhancing Friction Pendulum Isolation Systems Using Passive and Semi-Active Dampers
Applied Sciences, 2020 Friction pendulum systems (FPSs) are a common solution for isolating civil engineering structures under ground movements. The result is a base-isolated structure in which the base exhibits low shear stiffness in such a way that the input energy of the ...
Christian A. Barrera-Vargas +3 more
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New Journal of Physics, 2018 A phase-controlled ultralow-threshold phonon laser is proposed by using tunable optical amplifiers in coupled-cavity-optomechanical system. Giant enhancement of coherent photon-phonon interactions is achieved by engineering the strengths and phases of external parametric driving.
Yan-Lei Zhang +6 more
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Applied Sciences, 2018 An electrically tuned phase shifter based on the single slot unit cell and liquid crystal for a reconfigurable reflectarray antenna was presented. The simulation and measured results obtained at the F-band were used to demonstrate that the dielectric ...
Sheng Gao +7 more
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Frequency-Selective Beamforming Array Antenna Systems with Frequency-Dependent Phase Shifters [PDF]
Journal of Electromagnetic Engineering and Science, 2019 A frequency-selective beamforming array antenna system is proposed for next-generation mobile applications. Whereas a conventional phased array steers antenna beams in the same direction, the proposed system involves a channel-selective beam for each ...
Jung Ouk Kim +2 more
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Model Predictive Phase Control for Single-Phase Electric Springs
Energies, 2022 In this paper, model predictive control (MPC) is proposed for single-phase electric springs (ESs) with the help of the existing δ control, which is realized by controlling the instantaneous phase angle of the predefined sinusoidal reference of a certain ...
Qingsong Wang +3 more
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Developing S-phase control [PDF]
Genes & Development, 2012 The duration of S phase in early embryos is often short, and then increases as development proceeds because of the appearance of late-replicating regions of the genome. In the April 1, 2012, issue of Genes & Development, Farrell and colleagues (pp.
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Energies, 2018 A wave-energy converter has been studied through the combination of laboratory experiments and numerical simulations. The converter model is a semi-submerged axi-symmetric buoy with a circular cross section with a diameter of 26 cm at the water plane ...
Amélie Têtu +3 more
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